Mine car



sept. 3o. 1924. 1,509,963

J. c. H. LUBKEN MINE CAR Filed Aug. 27. 1921 bavelziar v Jam Y E orluf Patented Sept. 30, 1924.

UNITED STATES JOHN o. H. LUBKEN, or JoHNsToWN, PENNSYLVANIA.

MINE CAR.

Application filed August 27, 1921. Serial No. 496,121.

To all whom t Amay concer/rt.'

Be it known that l, JOHN (l. H. LUBKEN, a citizen of the United States, and a resident of the city of Johnstown, county of Cambria, and State of Pennsylvania, have invented certain new and useful Improvements in Mine Cars; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to means of strengthening and reinforcing certain portions of mine cars with special reference to the draft and buffing constructions.

Certain ininc cars are provided with con.- tinuous drawbars which extend throughout the length of the car, the end portions beingbent upwardly and spaced apart from the car bumpers and each lfirovided with a hole which registers with a hole in the car bumper and center sill, if the car has such a sill, to receive a coupling pin.

The bent-up portion of the continuous drawbar and particularly that part between the extreme end and the body, which is secured to the car body, is apt to become bent, distorted or destroyed by the stresses of use, and in order to prevent this I introduce between the bent-up end portion and the lower portions of the car construction a filler block or spacer of a shape to conform to the upwardly bent ends and also adapted to fit over the ends of the bumper and adjacent parts neatly, and these portions are secured together by through-bolts or rivets, and the filler or spacer block is provided with an offset portion which abuts against the end of the upper inner portion of the bumper and transmits the buffing stresses from the bumper to the other parts of the car, thereby materially strengthening the construction. In other words, the buffing stresses are transmitted from the bumpers by my improved filler or spacer to the other parts of the car, thereby preventing shearing of the bolts which attach the bumper to the car and the bending or distorting of the parts by reason of the strengthening effect of my spacer. 4

Having thus given a general description of my invention, I will now, in order to make the matter more clear, refer to the annexed sheet of drawings, which form part of this specification, land in which like characters refer to like parts.

Figure 1 is a top plan view of the end portion of a mine4 car illustrating the application of my invention; Figure 2 is a vertical longitudinal sectional elevation of the end portion of the mine car taken on the line lI--H of Figure 1: Figure 3 is an end elevation of a portion of the mine car and Figure L1 is a perspective view showing the underside of my spacer or filler block.

Referring now to the characters of reference on the drawings: 1 indicates a portion of the mine car as a whole; 2 a portion of the bottom thereof, the body of the car illustrated being` made of metal, although I wish it understood that my invention is equally aplnlicable to cars made of wood. The car provided with a wooden center sill 3 and a continuous drawbar f1 mounted against the car bottom and secured thereto and 'to the car sill by bolts or rivets, only two of which are shown, namely, 141, which passes through a portion of the continuous drawbar which rests upon the car bottom, through the car bottom, and through the center sill, while bolt 13 passes through a portion of the bent-up end of the continuous drawbar, through my special spacer or filler block 16, through the ends of the flanges 11 and 12 of the bumper or buffer 10, which buffer may be of pressed or cast metal. The outer end 5 of the continuous drawbar is bent upwardly as shown and spaced apart from the bumper 10 in order to provide space for the coupling link 8, which receives the coupling pin 7, which passes through; perforations or holes 6 in the various parts. The outer face of the buffer block is 9, and when the cars come forcibly together, as is frequently the case, the buffer block tends to be driven inwardly, thus causing heavy shearing and heavy stresses on the bolts 13 and 20, and this is resisted partly by contact of the shoulder of my spacer or filler block 16 with the inner end of the upper flange 11 of the buffer. rllhis transmits the bufling shock to other portions of the car construction and prevents local distortion and damage. The buffer block 10 has a top flange 11 and a bottom flange 12, which rest against the center sill 3 and `are secured thereto by the bolt 13 and are also secured to the other portion of the car frame by the bolts 20. The inclined portion of the continuous drawbar is 15 and the portion of my filler or spacer block which contacts with the same is 17,

the front portion thereof being 18, provided with a hole 19 to receive the bolt 13 previously mentioned.

Although I have shown and described my invention in considerable detail, I donot Wish to be limited to the exact and specific details thereof, as shown and described, but may use such modifications in, substitutions for, or equivalents thereof as are embraced within the scope of my. invention, or ae pointed out in the claims.

Having thus described 1n y invention, what I claim and desire to secure by Letters Iatent is:

1. A car provided with adr-aw bar mounted and secured to the upper surface of the floor thereof, having upwardly bent end portions, a Spacer block inserted and Secured between the car floor and the inner portion of the bent-up end of the draw bar and of shape and having a tapered inner end conforming to the draw bar and the car floor.

2. In a oar, a draw bar secured to the upend car

per surface of the bottom thereof with portions spaced apart therefrom, a bumper secured thereto, a filler block between the ends of the draw bar and the car Hoor with a tapered inner end Conforming to the draw bnr and with an oiiset portion adapted to Contact with the inner end of the bumper'.

3. A car provided with a. continuous metal draw bar, the end portions of which are bent upwardly and spared apart therefrom and secured thereto, n center sill secured to the car body, a bumper of open box-like form mounted on the end of the` siii, a spacer block with a tapered inner end fitted between the end portions` ot' the draw bnr, the cnr Hoor and the inner end ot the bumper, und provided with an offset adapted to Contact with the end of the bumper, and means for securing the parte in position.

In witnees whereof I hereunto utlix nly signature.

JOHN C. H. LUBKEN. 

